Add javascript to handle the creation/removal of 'X' crosslistings when web delivery method is seleceted/deselected.

Add the "Add crosslisting" and "Add Graduate Tie-In" images.  Should have been done a long time ago.

Adds course groups to those course codes that have them.  Currently only output in the all-courses xml dump.

Add the ability to make decisions on course requests while viewing their details.  Also allowed for a cleaner way to check if a user has an edit link when viewing a course's request details.